/*
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements.  See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF licenses this file to You under the Apache License, Version 2.0
    * (the "License"); you may not use this file except in compliance with
    * the License.  You may obtain a copy of the License at
    *
    *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.commons.math4.legacy.genetics;
  
  import java.util.Arrays;
  import java.util.List;
  
  /**
   * Implementation of ListChromosome for testing purposes
   */
  public class DummyListChromosome extends AbstractListChromosome<Integer> {
      public DummyListChromosome(final Integer[] representation) {
          super(representation);
      }
  
      public DummyListChromosome(final List<Integer> representation) {
          super(representation);
      }
  
      @Override
      public double fitness() {
          // Not important.
          return 0;
      }
  
      @Override
      protected void checkValidity(final List<Integer> chromosomeRepresentation) throws InvalidRepresentationException {
          // Not important.
      }
  
      @Override
      public AbstractListChromosome<Integer> newFixedLengthChromosome(final List<Integer> chromosomeRepresentation) {
          return new DummyListChromosome(chromosomeRepresentation);
      }
  
      @Override
      public int hashCode() {
          final int prime = 31;
          int result = 1;
          result = prime * result + (getRepresentation() == null ? 0 : getRepresentation().hashCode());
          return result;
      }
  
      @Override
      public boolean equals(final Object obj) {
          if (this == obj) {
              return true;
          }
          if (obj == null) {
              return false;
          }
          if (!(obj instanceof DummyListChromosome)) {
              return false;
          }
          final DummyListChromosome other = (DummyListChromosome) obj;
          if (getRepresentation() == null) {
              if (other.getRepresentation() != null) {
                  return false;
              }
          }
          final Integer[] rep = getRepresentation().toArray(new Integer[getRepresentation().size()]);
          final Integer[] otherRep = other.getRepresentation().toArray(new Integer[other.getRepresentation().size()]);
          return Arrays.equals(rep, otherRep);
      }
  }